Move prefix-map from build2 to libbutl

1 files changed, 0 insertions, 140 deletions

diff --git a/build/prefix-map b/build/prefix-map
deleted file mode 100644
index 885d284..0000000
--- a/build/prefix-map
+++ /dev/null
@@ -1,140 +0,0 @@
-// file      : build/prefix-map -*- C++ -*-
-// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
-// license   : MIT; see accompanying LICENSE file
-
-#ifndef BUILD_PREFIX_MAP
-#define BUILD_PREFIX_MAP
-
-#include <map>
-#include <string>
-#include <utility>   // move()
-#include <algorithm> // min()
-
-namespace build
-{
-  // A map of hierarchical "paths", e.g., 'foo.bar' or 'foo/bar' with
-  // the ability to retrieve a range of entries that have a specific
-  // prefix. The '.' and '/' above are the delimiter characters.
-  //
-  // Note that as a special rule, the default implementation of
-  // compare_prefix treats empty key as everyone's prefix even if
-  // the paths don't start with the delimiter (useful to represent
-  // a "root path").
-  //
-  // Implementation-wise, the idea is to pretend that each key ends
-  // with the delimiter. This way we automatically avoid matching
-  // 'foobar' as having a prefix 'foo'.
-  //
-  template <typename K>
-  struct compare_prefix;
-
-  template <typename C>
-  struct compare_prefix<std::basic_string<C>>
-  {
-    typedef std::basic_string<C> K;
-
-    typedef C delimiter_type;
-    typedef typename K::size_type size_type;
-    typedef typename K::traits_type traits_type;
-
-    explicit
-    compare_prefix (delimiter_type d): d_ (d) {}
-
-    bool
-    operator() (const K& x, const K& y) const
-    {
-      return compare (x.c_str (), x.size (), y.c_str (), y.size ()) < 0;
-    }
-
-    // Note: doesn't check for k.size () being at least p.size ().
-    //
-    bool
-    prefix (const K& p, const K& k) const
-    {
-      size_type pn (p.size ());
-      return pn == 0 || // Empty key is always a prefix.
-        compare (
-          p.c_str (), pn, k.c_str (), pn == k.size () ? pn : pn + 1) == 0;
-    }
-
-  protected:
-    int
-    compare (const C* x, size_type xn,
-             const C* y, size_type yn) const
-    {
-      size_type n (std::min (xn, yn));
-      int r (traits_type::compare (x, y, n));
-
-      if (r == 0)
-      {
-        // Pretend there is the delimiter characters at the end of the
-        // shorter string.
-        //
-        char xc (xn > n ? x[n] : (xn++, d_));
-        char yc (yn > n ? y[n] : (yn++, d_));
-        r = traits_type::compare (&xc, &yc, 1);
-
-        // If we are still equal, then compare the lengths.
-        //
-        if (r == 0)
-          r = (xn == yn ? 0 : (xn < yn ? -1 : 1));
-      }
-
-      return r;
-    }
-
-  private:
-    delimiter_type d_;
-  };
-
-  template <typename M>
-  struct prefix_map_common: M
-  {
-    typedef M map_type;
-    typedef typename map_type::key_type key_type;
-    typedef typename map_type::value_type value_type;
-    typedef typename map_type::key_compare compare_type;
-    typedef typename compare_type::delimiter_type delimiter_type;
-
-    typedef typename map_type::iterator iterator;
-    typedef typename map_type::const_iterator const_iterator;
-
-    explicit
-    prefix_map_common (delimiter_type d)
-        : map_type (compare_type (d)) {}
-
-    prefix_map_common (std::initializer_list<value_type> i, delimiter_type d)
-        : map_type (std::move (i), compare_type (d)) {}
-
-    std::pair<iterator, iterator>
-    find_prefix (const key_type&);
-
-    std::pair<const_iterator, const_iterator>
-    find_prefix (const key_type&) const;
-  };
-
-  template <typename M, typename prefix_map_common<M>::delimiter_type D>
-  struct prefix_map_impl: prefix_map_common<M>
-  {
-    typedef typename prefix_map_common<M>::value_type value_type;
-
-    prefix_map_impl (): prefix_map_common<M> (D) {}
-    prefix_map_impl (std::initializer_list<value_type> i)
-        : prefix_map_common<M> (std::move (i), D) {}
-  };
-
-  template <typename K,
-            typename T,
-            typename compare_prefix<K>::delimiter_type D>
-  using prefix_map = prefix_map_impl<std::map<K, T, compare_prefix<K>>, D>;
-
-  template <typename K,
-            typename T,
-            typename compare_prefix<K>::delimiter_type D>
-  using prefix_multimap =
-    prefix_map_impl<std::multimap<K, T, compare_prefix<K>>, D>;
-}
-
-#include <build/prefix-map.txx>
-
-#endif // BUILD_PREFIX_MAP